Removal of Eriochrome Black T Dye by Using Al2O3 Nanoparticles: Central Composite Design, Isotherm and Error Analysis

Abbas, Ruba Fahmi; Hami, Hawraa Kassem; Mahdi, Neda Ibrahim; Waheb, Ali Amer

doi:10.1007/s40995-020-00911-6

Cited by 11 publications

(4 citation statements)

References 35 publications

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“…where v (L) is the volume of dye solution, m (mg) is the mass of Co 3 O 4 , C 0 and C e (mg L -1 ) are EBT initial and equilibrium concentration, respectively [19].…”

Section: Adsorption Experimentsmentioning

confidence: 99%

“…pH is an essential factor that impacts the charge of the adsorbent surface and the degree of ionization of the sorbates in the solution. Thus, the pH impacts the Langmuir qe = q m K L C e /(1+K L C e ) 1/q e = (1/K L q m C e ) + (1/q m ) 1/q e vs. 1/C e q m = (intercept) −1 , K L = intercept/slope [19] Freundlich q e = K F (C e ) 1/n lnq e = lnK F + n −1 lnC e lnq e vs. lnC e K F = exp(intercept), 1/n = slope [19] Temkin q e = B ln(K T C e ) were B = RT/b q e = B lnK T + B lnC e qe vs. lnCe B = slope, K T = exp(intercept/slope) [1] Dubinin-Radushkevich (D-R) q e = q mexp (−βε 2 ) were ε = RT ln(1 + C e −1 ) lnq e = lnq m -βε 2 lnq e vs. ε 2 qm = exp(intercept), β=−slope [20] Kinetics model Pseudo-first-order qt = q e [1−exp(−k 1 t)] Ln(qe -qt) = lnq e -k l t ln(q e − q t ) vs. t q e = exp(intercept), k 1 = −(slope) [10] Pseudo-second-order qt = k 2 q 2 e t/(1 + q e k 2 t) t/q t = 1/k 2 q e 2 + 1/q e t t/q t vs. t q e = slope −1 , k 2 = (slope 2 )/intercept [10] qe, qm, qt (mg g -1 ) are the sorption capacity at equilibrium, saturated, and at time t; n is heterogeneity of site energies; b (J/mol) is Temkin constant; B (J/mol) is constant related to heat of adsorption; ε (J mol -1 ) is the Polanyi potential; β (mol 2 /kJ 2 ) is the D-R constant; R (8.314 J/K mol) is the gas constant; T (K) is the temperature; t (min) is time; KF(mgg -1 ) and KT (L/g) are Freundlich and Temkin constants; K1(min -1 ) and K2(mg g -1 min -1 ) are pseudo-first order and pseudo-second order rate constants q q 1 100 n p q…”

Section: Effect Of Solution Phmentioning

confidence: 99%

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Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies

et al. 2021

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The current study focused on utilizing cobalt oxide to eliminate hazardous Eriochrome Black T (EBT) dye. The impact of pH (2, 4, 7, 8, and 10) and temperature (45, 50, and 55 °C) was examined for EBT removal. The results show that the maximum sorption occurred at pH = 2 and that the removal percentage increased with increasing temperature. Five non-linear regression methods were used to predict the best isotherm and kinetic models. A coefficient of non-determination, K2, was very helpful for selecting the RMSD function as a preferable error function among the five methods. Isothermal models to illustrate equilibrium sorption information, the Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich models were used. The results showed that the Langmuir model (R2 = 0.99) was the most favorable, indicating monolayer sorption of EBT occurred. The kinetics models were analyzed using pseudo-first-order and pseudo-second-order whereas the sorption information was well described by the pseudo-second-order model (R2 = 0.99). The results of the thermodynamic study appeared that the adsorption of EBT was endothermic, feasible, spontaneous, and physical adsorption.

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“…where v (L) is the volume of dye solution, m (mg) is the mass of Co 3 O 4 , C 0 and C e (mg L -1 ) are EBT initial and equilibrium concentration, respectively [19].…”

Section: Adsorption Experimentsmentioning

confidence: 99%

Section: Effect Of Solution Phmentioning

confidence: 99%

Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies

et al. 2021

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“…Additionally, MnO 2 NPs have had their redox and sorption characteristics studied from a technical perspective for potential use in water oxidation catalysis or remediation strategies [32]. Aluminum oxide nanoparticles are a cheap surface, which has several features that cause it as an effective surface in the dye removal, because it possesses a large surface area, surface responsiveness, surface acidification, strong adsorption capacity, and many hydroxide groups [33]. The objectives of this study are: i) preparation of a new composite (Fe 3 O 4 /MnO 2 /Al 2 O 3 ) via coprecipitation method ii) investigation the efficiency of the prepared composite for the treatment of an aqueous solution contaminated with crystal violet dye and cadmium through batch experiments.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of New Composite Adsorbents for Removing Heavy Metals and Dyes from Aqueous Solution

Mokif,

Obaid,

Juda

2024

J. Ecol. Eng.

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In the current study, a novel composite (Fe 3 O 4 @MnO 2 @Al 2 O 3 ) was prepared to remove crystal violet dye and cadmium from aqueous solutions. The coprecipitation method was utilized to synthesize the composite. Batch studies were carried out using a contact period of 0.5-3 hours, an initial crystal violet and cadmium content of 50-200 mg/L, an agitation speed of 50-200 rpm, a pH of 4-12, and a composite dosage of 0.2-1.0 g per 50 mL of contaminated solution. The isotherm and kinetics models were formulated the experimental data. XRD, SEM-EDS, and FTIR analyses were utilized for composite characterization. The results revealed that the removal efficacy of crystal violet dye was 99.311% at 1 g of adsorbent, pH 12, 50 mg/L, 1 hour, and 200 rpm. The removal efficacy for cadmium (Cd) is 99.7296% at 1 g of sorbent mass at pH 6, 50 mg/L, 1 hour, and 200 rpm. The outcomes demonstrated that the Langmuir model could accurately depict the sorption of crystal violet dye onto the composite with R 2 (0.9882) and SSE (0.7084). On the basis of Freundlich, the capacity of the composite to reflect cadmium sorption was assessed by its highest R 2 (0.8947) and lowest SSE (8.5149). The pseudo-second-order model is a more realistic way to explain how cadmium and crystal violet dye sorb onto the composite. The results showed that the composite is effective in eliminating target pollutants, since cadmium has a maximum adsorption capacity of 48.5052 mg/g and crystal violet dye has a capacity of 40.9682 mg/g. Therefore, (Fe 3 O 4 @MnO 2 @Al 2 O 3 ) can be used as efficient sorbent for removing Cd and crystal violet dye from synthetic industrial wastewater.

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“…Freundlich equation (Freundlich adsorption isotherm) is an empirical relationship between adsorbed gas quantity in solid surface and gas pressure. Also, this equation is applicable for solute concentration that adsorbed onto solid surface and solute concentration of solute in liquid phase [27]. However, Langmuir adsorption model is designed to explain adsorption depending on assume adsorbate behaves as an ideal gas at isotherm conditions and adsorption with desorption in reversible relationship [28,29].…”

Section: Introductionmentioning

confidence: 99%

The uptake of Eriochrome Black T dye from Wastewater utilizing synthetized Cadmium Sulfide Nanoparticles

MAHMOOD

2021

Egypt. J. Chem.

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Eriochrome Black T dye is an indicator of complex titration as water hardness, as an azo dye, blue in its deprotonated form, and turns red when it forms a complex with metal ions such as Ca, Mg, Cd . .etc. Water contamination is considered one of the most important problems that threaten human life on earth. An efficient method is done to remove EBT from wastewater via using cadmium sulfide Nanoparticles (CdS NPS) that was prepared by using an inexpensive and simple method (chemical precipitation) and was diagnosed this nanomaterial using an X-ray diffractometer (XRD), Transmission electron microscope (TEM), Scanning electron microscope (SEM) and Energy Dispersive X-Ray Analyzer (EDX). TEM characterization results for CdS nanoparticles illustrated that the nanoparticles have a pointy shape-like needles morphology and with miscellaneous sizes, the statistical calculation gives (32) nm as the rate particle size. Through this study, the CdS nanomaterial proved that it has a high ability to adsorb Eriochrome Black-T (EBT) dye under certain conditions where we noticed that the maximum adsorption capacity of this dye by CdS nanoparticles was at Temperature (293) K, (pH = 6) and at a concentration (0.01 g) of the CdS nanomaterial with contact time up to (40) minutes and CdS. Also calculated the thermodynamic functions, (ΔS, ΔH, ΔG), we found that the process was spontaneous and exothermic under the specific condition through The thermodynamic parameters.

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Removal of Eriochrome Black T Dye by Using Al2O3 Nanoparticles: Central Composite Design, Isotherm and Error Analysis

Cited by 11 publications

References 35 publications

Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies

Azo Dye Adsorption onto Cobalt Oxide: Isotherm, Kinetics, and Error Analysis Studies

Synthesis of New Composite Adsorbents for Removing Heavy Metals and Dyes from Aqueous Solution

The uptake of Eriochrome Black T dye from Wastewater utilizing synthetized Cadmium Sulfide Nanoparticles

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